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The Horizon H-300 PEM Fuel Cell is a 300 Watt, air fed / air cooled, self-humidified hydrogen fuel cell suitable for many medium projects and uses. Because this fuel cell is air cooled there is no need for large, complicated, and expensive water cooling systems.

Horizon H-Series PEM fuel cells are semi-integrated, efficient, reliable systems that minimize the use of peripherals. As such, they are the most compact and lightweight fuel cells around the world.